| Birth Date: | 25 September 1974 |
| Birth Place: | Santa Catarina |
| Show-Medals: | yes |
Javier Rosas Sierra (born September 25, 1974, in Guadalajara) is a male athlete from Mexico. He competes in the triathlon.
Rosas competed at the second Olympic triathlon at the 2004 Summer Olympics. He placed forty-fourth with a total time of 2:04:03.97.